/*
* Empire - A multi-player, client/server Internet based war game.
* Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure, Markus Armbruster
*
* Empire is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*
* ---
*
* See files README, COPYING and CREDITS in the root of the source
* tree for related information and legal notices. It is expected
* that future projects/authors will amend these files as needed.
*
* ---
*
* shutdown.c: Shuts down server. Runs at low priority.
*
* Known contributors to this file:
* Ken Stevens, 1995
* Markus Armbruster, 2007-2013
*/
#include
#include
#include "empthread.h"
#include "prototypes.h"
#include "server.h"
int shutdown_pending;
static empth_t *shutdown_thread;
static void shutdown_sequence(void *unused);
/*
* Initiate shutdown in @mins_from_now minutes.
* If @mins_from_now is negative, cancel any pending shutdown instead.
* Return -1 on error, zero when no shutdown was pending, positive
* number when a pending shutdown was modified.
*/
int
shutdown_initiate(int mins_from_now)
{
int old_pending = shutdown_pending;
if (mins_from_now < 0) {
if (shutdown_pending) {
shutdown_pending = 0;
pr_wall("The server shutdown has been cancelled!\n");
}
return old_pending;
}
shutdown_pending = mins_from_now + 1;
if (shutdown_thread) {
if (old_pending)
pr_wall("The shutdown time has been changed to %d minutes!\n",
mins_from_now);
empth_wakeup(shutdown_thread);
} else {
shutdown_thread = empth_create(shutdown_sequence, 65536, 0,
"shutdownSeq", NULL);
if (!shutdown_thread) {
shutdown_pending = 0;
return -1;
}
}
return old_pending;
}
static void
shutdown_sequence(void *unused)
{
time_t now;
pr_wall("The server will shut down in %d minutes!\n",
shutdown_pending - 1);
while (shutdown_pending > 0) {
--shutdown_pending;
time(&now);
if (shutdown_pending <= 1440) { /* one day */
if (shutdown_pending == 0) {
shutdwn(0);
} else if (shutdown_pending == 1) {
pr_wall("Server shutting down in 1 minute!\n");
} else if (shutdown_pending <= 5) {
pr_wall("Server shutting down in %d minutes!\n",
shutdown_pending);
} else if (shutdown_pending <= 60
&& shutdown_pending % 10 == 0) {
pr_wall("The server will be shutting down in %d minutes!\n",
shutdown_pending);
} else if (shutdown_pending % 60 == 0) {
pr_wall("The server will be shutting down %d hours from now.\n",
shutdown_pending / 60);
}
}
/* FIXME error due to late wakeup accumulates */
empth_sleep(now + 60);
}
shutdown_thread = NULL;
}